#window-bar{
    -webkit-app-region: drag;
    app-region: drag;
    padding-left: env(titlebar-area-x, 24px);
    padding-right: calc(100vw - env(titlebar-area-width, 100%) - env(titlebar-area-x, 24px));
    width: env(titlebar-area-width, 100%);
    height: env(titlebar-area-height, 40px);
    width: 100%;
    background-color: #000;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99;
}

#window-bar button{
    -webkit-app-region: no-drag;
    app-region: no-drag;
}

#content{
    margin-top: env(titlebar-area-height, 40px);
}